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focussing tips

hyee lensbaby users...
i am using a composer with double glass optic nikon f mount with an adapter on a canon 5d mk3 camera. i am finding focussing bit tricky. can anyone help with any tip? also using the same with edge 80 optic. its more tricky then.

Your Nikon Composer adaption has probably maxed out the infinity focus, so it's now not letting you get proper focus.

Or maybe you were expecting a wider viewpoint then the Lensbaby is capable, either try stopping down the aperture for better sharpness across the plane of focus or get a Lensbaby with the Canon mount to see if that will solve your focus problem .

Lensbabies that use a bellows style focusing tube have back focus so you can get away with adaptions . Composers are bit more precise in their focus points between camera brands, the Canon is shorter then the Nikon....in theory you would believe an adapter would work, but in reality maybe the Composers do not adapt well ?

But....to totally confuse the issue, I have changed out Canon Composer Pros to fit my Nikons just by changing the Lensbaby original mounts....I had no problems with getting focus....the front focus mechanism allowed plenty of back focus ...so maybe a little trial and error practice using another Lensbaby will give you an answer to why your combination is so tricky to use ?

1 - make sure you're viewfinder diopter is adjusted for your eyesight (or try LiveView)
2 - try starting with an aperture of f/5.6, that will make the sweet spot a little larger and easier to find
3 - start with the Composer pointed straight ahead, focus, then try a small amount of tilt to move the sweet spot around